The objective of this study was to evaluate the one hand, tolerance, in terms of pain and side effects, and secondly, the effectiveness of this therapeutic approach, in terms of healing of the ulcer assuming a decrease in the size of the estimated at least 40% at 3 months wound. The objective also covers the measurement of changes in the appearance of the wound, with an expected decrease of relative areas of fibrin and necrosis. The percentage of wound healing and wound area was measured at each visit, a curve will be performed for each patient to assess the speed of healing and the appearance of the wound will be notified.